The Effects of Political Incivility on Political Trust and Political Participation: A Meta-Analysis of Experimental Research

A great deal of experimental research has focused on how political incivility affects ordinary citizens. A common finding is that incivility reduces political trust. Effects on political participation have also been investigated, but seem less consistent across studies. The results of a systematic review and meta-analysis, including a total of 24 manuscripts containing 35 studies, revealed that the estimated effect of political incivility on political trust was significant, Hedges' g = -0.19 [95% CI: -0.30, -0.09]. The effect was small, however, and some indication of publication bias was found. The effect was stronger when the incivility was communicated through video versus other media, and for studies conducted in the United States versus Europe. The estimated effect of political incivility on political participation was almost non-existent, g = -0.02 [-0.11, 0.08], although it was significantly stronger (more negative) for studies conducted in Europe rather than in the United States.